Rubio cynically tries to connect dots between (successful) Obama-era programs designed to reduce racial disparities in school discipline, which have been a big problem for a long time, and the violence of school shooters, who as a group are remarkably white.

QuoteAcer
"Show us on this doll where Affirmative Action shot your student in a hail of gunfire"

Yeah, I know it's not affirmative action Lemon is discussing, but the criticism is all in the same vein of coddling brown people at the expense of white people.

Tell you what. If gun worship were suddenly only a Black thing, we'd have gun control before the close of business today.

I agree with you, but I'm not sure "gun worship" is a black thing at all. American blacks favor gun responsibility laws in much higher numbers than whites.
And there is no question that the demographic of school shooters (and mass shooters in general) is young white males.